Cleartone Acoustic Strings may have a coating of only one micron, but it's more durable than coatings thousands of times its thickness. It won't flake off with hard playing, nor will it feel slick or slippery to your touch. Super-high tension winding over a hex-core is used to maintain tuning consistency throughout your performance. EMP Treatment is then applied to all the strings (including plain strings) to ensure longest tonal life without compromises.